<template>
	<div class="login-container">
		<el-form
			ref="formRef"
			:model="loginForm"
			:rules="loginRules"
			class="login-form"
			auto-complete="on"
			label-position="left"
		>
			<div class="title-container">
				<h3 class="title">小猫の商店</h3>
			</div>

			<el-form-item prop="username">
				<span class="svg-container">
					<svg-icon name="ele-UserFilled" />
				</span>
				<el-input
					ref="username"
					v-model="loginForm.username"
					placeholder="Username"
					name="username"
					type="text"
					tabindex="1"
					auto-complete="on"
				/>
			</el-form-item>

			<el-form-item prop="password">
				<span class="svg-container">
					<svg-icon name="ele-Lock" />
				</span>
				<el-input
					:key="passwordType"
					ref="passwordRef"
					v-model="loginForm.password"
					:type="passwordType"
					placeholder="Password"
					name="password"
					tabindex="2"
					auto-complete="on"
					@keyup.enter.native="handleLogin"
				/>
				<span class="show-pwd" @click="showPwd">
					<svg-icon
						:name="passwordType === 'password' ? 'ele-Hide' : 'ele-View'"
					/>
				</span>
			</el-form-item>

			<el-button
				:loading="loading"
				type="primary"
				style="width: 100%; margin-bottom: 30px; height: 40px"
				@click.native.prevent="handleLogin"
				>登 陆</el-button
			>
		</el-form>
	</div>
</template>

<script lang="ts">
export default {
	name: 'Login',
}
</script>

<script lang="ts" setup>
import { useUserInfoStore } from '@/stores/userInfo'
import type { FormInstance } from 'element-plus'
import { nextTick, ref, watch } from 'vue'
import { useRoute, useRouter } from 'vue-router'

const userInfoStore = useUserInfoStore()
const route = useRoute()
const router = useRouter()
const loginForm = ref({
	username: 'admin',
	password: '111111',
})
const loading = ref(false)
const passwordType = ref('password')
const redirect = ref('')
const passwordRef = ref<HTMLInputElement>()
const formRef = ref<FormInstance>()

const validateUsername = (rule: any, value: any, callback: any) => {
	if (value.length < 4) {
		callback(new Error('用户名长度不能小于4位'))
	} else {
		callback()
	}
}
const validatePassword = (rule: any, value: any, callback: any) => {
	if (value.length < 6) {
		callback(new Error('密码长度不能小于6位'))
	} else {
		callback()
	}
}

const loginRules = {
	username: [{ required: true, validator: validateUsername }],
	password: [{ required: true, trigger: 'blur', validator: validatePassword }],
}

watch(
	route,
	() => {
		redirect.value = route.query && (route.query.redirect as string)
	},
	{ immediate: true }
)

/* 
切换密码的显示/隐藏
*/
const showPwd = () => {
	if (passwordType.value === 'password') {
		passwordType.value = 'text'
	} else {
		passwordType.value = 'password'
	}
	nextTick(() => {
		passwordRef.value?.focus()
	})
}

/* 
点击登陆的回调
*/
const handleLogin = async () => {
	await formRef.value?.validate()
	loading.value = true
	const { username, password } = loginForm.value
	try {
		await userInfoStore.login(username, password)
		router.push({ path: redirect.value || '/' })
	} finally {
		loading.value = false
	}
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
	.login-container .el-input input {
		color: $cursor;
	}
}
/* reset element-ui css */
.login-container {
	background-image: url(../../assets/bg.jpg);
	background-color: #2d3a4b;
	background-size: cover;
	.el-input {
		display: inline-block;
		height: 47px;
		width: 85%;
		.el-input__wrapper {
			width: 100%;
			background-color: transparent;
			box-shadow: none;
			input {
				background: transparent;
				border: 0px;
				-webkit-appearance: none;
				border-radius: 0px;
				padding: 12px 5px 12px 15px;
				color: $light_gray;
				height: 47px;
				caret-color: $cursor;

				&:-webkit-autofill {
					box-shadow: 0 0 0px 1000px $bg inset !important;
					-webkit-text-fill-color: $cursor !important;
				}
			}
		}
	}

	.el-form-item {
		border: 1px solid rgba(255, 255, 255, 0.1);
		background: rgba(0, 0, 0, 0.1);
		border-radius: 5px;
		color: #454545;
	}
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
	min-height: 100%;
	width: 100%;
	background-color: $bg;
	overflow: hidden;

	.login-form {
		position: relative;
		width: 520px;
		max-width: 100%;
		padding: 160px 35px 0;
		margin: 0 auto;
		overflow: hidden;
	}

	.tips {
		font-size: 14px;
		color: #fff;
		margin-bottom: 10px;

		span {
			&:first-of-type {
				margin-right: 16px;
			}
		}
	}

	.svg-container {
		padding: 6px 5px 6px 15px;
		color: $dark_gray;
		vertical-align: middle;
		width: 30px;
		display: inline-block;
	}

	.title-container {
		position: relative;

		.title {
			font-size: 26px;
			color: $light_gray;
			margin: 0px auto 40px auto;
			text-align: center;
			font-weight: bold;
		}
	}

	.show-pwd {
		position: absolute;
		right: 10px;
		top: 10px;
		font-size: 16px;
		color: $dark_gray;
		cursor: pointer;
		user-select: none;
	}
}
</style>
